Two-phase clock charge pump with power regulation

Details Two-phase clock charge pump with power regulation Two-phase clock charge pump with power regulation

1998-03-12

2000-02-22

Riley, Shawn

Electric power conversion systems

Current conversion

With voltage multiplication means

36518533, 365218, H02M 318

Patent

active

060287802

ABSTRACT:
A method and apparatus for providing a charge pump that is particularly useful for generating high voltages and high currents for erasing and programming flash electrically-erasable programmable read only memory arrays (Flash EEPROMs). The invention includes an efficient method and circuit for generating a pumped voltage with no voltage drop from one stage to the next by using a simple two-phase clocking scheme and an auxiliary pump to gate a larger primary pump. One feature allows adjustment of the level of voltage pumping to accommodate higher voltage power supplies.

REFERENCES:
patent: 5263000 (1993-11-01), Van Burskirk et al.
patent: 5282170 (1994-01-01), Van Burskirk et al.
patent: 5291446 (1994-03-01), Van Burskirk et al.
patent: 5301097 (1994-04-01), McDaniel
patent: 5406517 (1995-04-01), Chang et al.
patent: 5432469 (1995-07-01), Tedrow et al.
patent: 5612921 (1997-03-01), Chang et al.
patent: 5719807 (1998-02-01), Sali et al.

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